fix: Fix docs.

Author: denniske

README.md

@@ -2,7 +2,7 @@
 
 A loader for [ngx-translate](https://github.com/ngx-translate/core) that loads translations using http.
 
-Simple example using ngx-translate: https://stackblitz.com/github/ngx-translate/example
+Simple example using ngx-translate: https://stackblitz.com/edit/ngx-translate-multi-http-loader-sample
 
 Get the complete changelog here: https://github.com/ngx-translate/multi-http-loader/releases